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    Re: A C Johnson
    From: Stephen N.G. Davies
    Date: 2017 Jan 12, 10:34 +0800
    Frank Reed will know better than I, but my impression is that this work seems to have gone by multiple titles depending on source. The most authoritative I can find (a bibliographic reference, not an e- or other copy) is: Alfred Challice Johnson, How to Find the Longitude simultaneously with Latitude at Noon and at other Times, how to deduce by Inspection from Two Chronometers both Latitude and Longitude, etc. etc., with Azimuth Table, 3rd Edition, 8vo. (pp. 24), sewn, 3s 1867. If 3rd edition in 1867, it was must have been something of a runaway seller since it was mentioned favourably as something of a new production in an article “On clearing the lunar distance” by Edward H. Hebden of Scarborough in the Nautical Magazine and Naval Chronicle, 1868, pp.40-41.
    Johnson was an interesting chap - born in Cambridge (UK) c.1828 and a graduate of Gonville & Caius College in 1853, he worked as an instructor in the Royal Navy (initially as an embarked schoolmaster for the education of midshipmen) from 1855-1887. By 1877 he was the senior instructor in the British Royal Navy’s cadet training ship, HMS Britannia, and taught both the future Edward VIII and George V. He was a prolific author of instructional books in the mathematics of navigation - I’ve found about 14 separate titles by him, and WorldCat lists a total of 36 though many seem to be updates/improvements and retitled versions of earlier works, at least some of which were translated into French and Turkish(!). His first seems to have been An introduction to plane and spherical trigonometry, 1865, which went through nine editions, the ninth of 1899 changing the title to The elements of plane and spherical trigonometry.
    Some of his works were obviously major stand-bys, his On finding the latitude and longitude in cloudy weather and at other times, went into its 40th edition in 1929 (20 years after Johnson’s death) and, as far as I can work out, may well have been the final iteration of the book you are looking for, WorldCat (which works on titles) begins its listing with the 33rd, 1912 edition but one infers a change of title at that point. The 36th edition is on the Internet Archive - see https://archive.org/details/onfindinglatitud00johnrich
    Stephen D

    Dr Stephen Davies,
    Hon. Professor, Department of Real Estate and Construction
    Hon. Fellow, HK Institute for the Humanities and Social Sciences
    Hon. Editor, Journal of the Royal Asiatic Society Hong Kong 
    c/o Department of Real Estate and Construction
    EH103, Eliot Hall
    University of Hong Kong

    Office: (852) 2219 4089
    Mobile: (852) 6683 3754 

    stephen.davies79@gmail.com
    daiwaisi@hku.hk




    On 12 Jan 2017, at 5:08 AM, Ducruy Jacques <NoReply_Jacques@fer3.com> wrote:

    Hello,

    Happy new year !

    I had look for without success a pamphlet of AC Johnson : "How to find the longitude simultaneous with latitude at noon or other times", published in 1867.

    It seem interresting to compae this book with others books writed by Johnson in the years 1880/90.

    Can you help me ?

    Thank you in advance

    Best Regards

    Jacques


       
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